Pipe a takes 10 hrs to fill a tank but due to a leakage, it takes 5 hrs more. how long will a leak take to empty the tank if it is completely filled?

exa:

)

3+11

14

step-by-step explanation:

from this example, we can see that subtracting with integers is the same as adding the opposite. we can solve using a number line or by using the saying "keep, change, change" to us solve. it is important to remember that we can subtract a negative and end up with a larger number than we started with.